Machining of tree discs to evaluate the annual growth rings with turn-milling; Part 2
: 16 - 19
The analysis of the pattern of annual growth rings is done by a lot of different disciplines: Phytology, wood biology, climatology, pollution control, geography, ecology, archaeology, architecture, science of forestry etc. But the machining of cross-grained wood is one of the most difficult grinding tasks in woodworking. Up to now, such tree discs are prepared with a special machine, which cuts the surface with a sharp blade. This solution is very expensive, because for every test specimen a new blade is required. Furthermore it is just possible to prepare a small stripe instead of the whole disc. With the machining process of turn-milling it is possible to finish such tree discs in an adequate quality and in a short cutting time. After the milling strategy and the test equipment were presented in the first part, the second part will discuss the experiment parameters and the results.